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cog-second-brain

v3.15.0

Self-evolving second brain with 36 AI agent skills, 10 agents, and people CRM. Closed-loop harness: a V-model verification lifecycle (spec to evidence, criterion-traced checkpoints), read-only verifier agents that observe artifacts instead of trusting worker summaries, risk lanes, multi-session ultragoals with a north-star acceptance gate, plus craft skills for writing, visual work, and a paired anti-slop design system for marketing and product UI. Works with Claude Code, Antigravity, Cursor, Kiro, Gemini CLI, Codex, and any Agent Plugins conformant client.

Agent Plugins33 Skills

By Huy TieuLicense: MIT1.3k GitHub starsUpdated 4 days ago

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Agent Plugins
Parsed components
33 skill or MCP entries
Source updated
Oct 2, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Get the plugin

git clone https://github.com/huytieu/COG-second-brain

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

This listing currently publishes only the generic Agent Plugins format. Automatic install commands for other clients are not generated yet.

Plugin files

cog-second-brain/
├── plugin.json
├── skills/auto-research/SKILL.md
├── skills/braindump/SKILL.md
├── skills/closed-loop/SKILL.md
├── skills/comprehensive-analysis/SKILL.md
├── skills/content-factory/SKILL.md
├── skills/create-user-story/SKILL.md
├── skills/daily-brief/SKILL.md
├── skills/daily-journal/SKILL.md
├── skills/data-forms/SKILL.md
├── skills/editorial-illustrations/SKILL.md
├── skills/export-open-issues/SKILL.md
├── skills/generate-prd/SKILL.md
├── skills/generate-release-notes/SKILL.md
├── skills/harvest/SKILL.md
├── skills/knowledge-consolidation/SKILL.md
├── skills/loop-engineering/SKILL.md
├── skills/meeting-transcript/SKILL.md
├── skills/memory-hygiene/SKILL.md
├── skills/museum-art/SKILL.md
├── skills/onboarding/SKILL.md
├── skills/product-ui-taste/SKILL.md
├── skills/publish-to-confluence/SKILL.md
├── skills/release-video/SKILL.md
├── skills/retro/SKILL.md
├── skills/scout/SKILL.md
├── skills/taste-skill/SKILL.md
├── skills/team-brief/SKILL.md
├── skills/ultragoal/SKILL.md
├── skills/update-cog/SKILL.md
├── skills/update-knowledge-base/SKILL.md
├── skills/url-dump/SKILL.md
├── skills/voice-baseline/SKILL.md
└── skills/weekly-checkin/SKILL.md

Included Skills33

auto-researchskills/auto-research/SKILL.md

Deep strategic research engine — decomposes questions into parallel research threads, spawns multiple agents, and synthesizes into actionable strategic analysis

braindumpskills/braindump/SKILL.md

Quick capture of raw thoughts with intelligent domain classification and competitive intelligence extraction

closed-loopskills/closed-loop/SKILL.md

Run one task through the V-model verification loop: CP-2 plan → CP-3 build → CP-3v component verify → CP-4 integration verify (full lane) → CP-5 acceptance. The worker never grades its own homework; evidence rows trace back to AC-n. Opt-in: invoke with /closed-loop or by asking for the closed loop, proper verification, or an evidence trail. Ordinary work does not run this.

comprehensive-analysisskills/comprehensive-analysis/SKILL.md

Deep-dive 7-day analysis across all data sources for weekly reviews, board prep, and strategic planning

content-factoryskills/content-factory/SKILL.md

Autonomous content pipeline - scout announcements in your field, triage by trend momentum and personal angle, produce posts/blogs/videos in your voice with ledger-based dedup, hard volume caps, and screenshot-verified publishing

create-user-storyskills/create-user-story/SKILL.md

Create user stories with duplicate checking across any project tracker (Linear, GitHub Issues, Jira)

daily-briefskills/daily-brief/SKILL.md

Generate personalized news intelligence with verified sources (7-day freshness requirement)

daily-journalskills/daily-journal/SKILL.md

A passive daily work journal that Claude keeps FOR you so you never have to write it yourself. Append short entries after meaningful work (what was done, what you focused on, artifacts touched) to 01-daily/journal/YYYY-MM-DD.md. Run a guided reflection at night or in the morning. Use when you run /daily-journal, say "log this to my journal", "add to today's journal", "reflect on today/yesterday", or when finishing a meaningful chunk of work in any session.

data-formsskills/data-forms/SKILL.md

Pick the right way to represent a dataset so a reader gets the finding in three seconds — a catalog of 20+ chart and diagram forms with when-to-use and failure modes, plus the encoding decisions that make any of them readable (takeaway headline, direct labels, kill the axis, highlight-and-mute, show the caveat). Style-agnostic — use with whatever palette or design system the destination already has. Use when charting survey results, benchmark data, usage metrics, or research findings for a post, brief, deck, or report, and whenever the default bar chart feels like it's burying the point.

editorial-illustrationsskills/editorial-illustrations/SKILL.md

Generate meaning-carrying editorial data-illustrations in the monotykamary / Linear aesthetic (near-black grayscale, Inter display + mono labels, hairline framed figures) with a single coral accent. This is a GENERATIVE GUIDE, not a template gallery: it teaches the "claim -> geometry" method so any session can invent the RIGHT figure for what a post actually argues, then render it as a self-contained, theme-aware, reduced-motion-safe HTML/SVG figure. Use when writing/illustrating a blog post, essay, spec, or slide and you want a chart, diagram, or illustration that carries a thesis (not decoration) in the house style. Triggers: "make a chart/diagram/illustration for this", "visualize this argument", "monotykamary/Linear style figure", "editorial graphic".

export-open-issuesskills/export-open-issues/SKILL.md

Audit and export open issues from any project tracker with summary analysis and vault archival

generate-prdskills/generate-prd/SKILL.md

Generate product requirements documents with optional publishing to Confluence or other wiki platforms

generate-release-notesskills/generate-release-notes/SKILL.md

Generate categorized release notes from any source (GitHub, Linear, Jira, or manual input) with optional publishing

harvestskills/harvest/SKILL.md

Capture durable session learnings, stage for human promotion to 05-knowledge/lizard, and propose skill/CLAUDE.md patches. Triggered by /harvest, SessionEnd hook staging, or nightly enhance. Never writes durable knowledge without your approval.

knowledge-consolidationskills/knowledge-consolidation/SKILL.md

Build frameworks from scattered insights across all braindumps and notes

loop-engineeringskills/loop-engineering/SKILL.md

Shared loop-engineering reference for COG skills - the agent loop, deterministic verifiers, termination conditions, in-loop context management, and named patterns. Invoke when designing or debugging a skill that iterates (search-verify-retry, scan-until-dry, fetch-retry-gate).

meeting-transcriptskills/meeting-transcript/SKILL.md

Process meeting recordings and notes into structured decisions, action items, and team dynamics with intelligent noise filtering

memory-hygieneskills/memory-hygiene/SKILL.md

Periodic trust sweep of persistent memory and durable knowledge notes - re-verifies environment-dependent claims against the live environment, stamps last_verified + confidence, and proposes archiving drifted entries

museum-artskills/museum-art/SKILL.md

Source authentic, high-res PUBLIC-DOMAIN artwork from museum open-access APIs (Met, Cleveland, SMK, Rijksmuseum, NGA, Art Institute of Chicago, Getty, Smithsonian) instead of AI-generated or generic-stock imagery. The default move whenever a visual needs an aesthetic, credible image (blog heroes, decks, social cards, essay/spec figures). Verified keyless recipes + licensing rules inside.

onboardingskills/onboarding/SKILL.md

Personalize COG for your workflow - creates profile, interests, and watchlist files with guided setup (run this first!)

product-ui-tasteskills/product-ui-taste/SKILL.md

Anti-slop skill for PRODUCT UI - dashboards, data tables, forms, multi-step flows, settings, list/detail, app shells. The agent reads the surface, budgets the frame first, and ships dense interfaces that are correct at every edge case (overflow, long labels, empty/error/loading states, i18n expansion, keyboard/a11y). House-system-first; maps to Carbon/Polaris/Atlaskit/Fluent/Primer/Material3/Radix-shadcn/Ant. The counterpart to taste-skill, which owns landing/portfolio/marketing.

publish-to-confluenceskills/publish-to-confluence/SKILL.md

Publish any markdown file from the vault to Confluence with format conversion and approval gate

release-videoskills/release-video/SKILL.md

Turn a product release (the list of shipped items plus real screen recordings) into a motion recap video and one explained demo per feature, with sound effects tied to on-screen motion and a composed music bed. Deterministic HTML scenes rendered frame by frame, ElevenLabs for sound effects and music, ffmpeg for the mix. Use when asked for a release video, a changelog video, a feature recap reel, or demo clips for release notes and docs.

retroskills/retro/SKILL.md

CP-7 retrospective: audit checkpoints, evidence quality, action items, and harvest candidates. Closes the V-model cycle and feeds the next run. Use via /retro after ship, escalate, or significant session.

scoutskills/scout/SKILL.md

Evaluate URLs and tools — check vault coverage, assess relevance, recommend save or skip

taste-skillskills/taste-skill/SKILL.md

Anti-slop frontend skill for landing pages, portfolios, and redesigns. The agent reads the brief, infers the right design direction, and ships interfaces that do not look templated. Real design systems when applicable, audit-first on redesigns, strict pre-flight check.

team-briefskills/team-brief/SKILL.md

Generate daily team intelligence brief by cross-referencing GitHub, Linear, Slack, PostHog, meetings, and braindumps with two-way Linear sync-back

ultragoalskills/ultragoal/SKILL.md

Run a large, multi-session goal (e.g. shipping a whole side product) through the full V-model closed loop, one phase at a time, with cross-session state and a final north-star acceptance gate. Ultragoals never downgrade the lane: every phase runs CP-1→CP-6 with adversarial verification. Opt-in: invoke with /ultragoal or by calling something a long-running goal. Ordinary work does not run this.

update-cogskills/update-cog/SKILL.md

Check for and apply upstream COG framework updates (skills, docs, scripts) without touching personal content

update-knowledge-baseskills/update-knowledge-base/SKILL.md

Maintain and update product knowledge base from releases, features, and project changes with optional wiki sync

url-dumpskills/url-dump/SKILL.md

Quick capture URLs with automatic content extraction, insights, and categorization into knowledge booklets

voice-baselineskills/voice-baseline/SKILL.md

Measure your own writing corpus for the words and sentence shapes you over-use, so an agent writing in your voice stops amplifying your tics into a style. Produces a counted baseline file and checks any new draft against it. Use when an agent's drafts start sounding like a caricature of you, before publishing anything written in your voice, or every ten new pieces to re-measure.

weekly-checkinskills/weekly-checkin/SKILL.md

Cross-domain pattern analysis and strategic reflection for weekly review

Plugin manifests1

plugin.json
{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "cog-second-brain",
  "version": "3.15.0",
  "description": "Self-evolving second brain with 36 AI agent skills, 10 agents, and people CRM. Closed-loop harness: a V-model verification lifecycle (spec to evidence, criterion-traced checkpoints), read-only verifier agents that observe artifacts instead of trusting worker summaries, risk lanes, multi-session ultragoals with a north-star acceptance gate, plus craft skills for writing, visual work, and a paired anti-slop design system for marketing and product UI. Works with Claude Code, Antigravity, Cursor, Kiro, Gemini CLI, Codex, and any Agent Plugins conformant client.",
  "author": {
    "name": "Huy Tieu",
    "email": "[email protected]",
    "url": "https://github.com/huytieu"
  },
  "homepage": "https://github.com/huytieu/COG-second-brain",
  "repository": "https://github.com/huytieu/COG-second-brain",
  "license": "MIT",
  "keywords": [
    "second-brain",
    "knowledge-management",
    "obsidian",
    "ai-agents",
    "productivity",
    "people-crm",
    "claude-code",
    "cursor",
    "kiro",
    "gemini-cli",
    "codex",
    "closed-loop",
    "verification-harness",
    "ultragoal",
    "no-ai-slop",
    "agent-plugins"
  ]
}

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